1. searching out interesting animals and plants to gain design insights that will help them create novel materials,compounds and products e.g.a waterproof glue has been developed by studying the natural adhesive produced by molluscse; a pollution-free water-based paint mimicking the way insects' wings grow and dry; Velcro created as a copy of the hooks in natural burrs; new strong but light materials have come from studying the structure of bone etc.; fascinating!
2. using the eye iris, voice tones, palm print, face outline, as means to access security walls e.g. ATMs, computers etc.